New Delhi, March 13 -- The gunman who opened fire on the campus of the Old Dominion University in Norfolk, Virginia - killing one and injuring two - was a former soldier convicted of and jailed for supporting ISIS, and was out on probation for the very same terrorism-related charge.

The suspect was identified by the FBI as 36-year-old Mohamed Bailor Jalloh, who was also killed killed in Thursday's shooting, and the federal agency is investigating the shooting as an act of terrorism.

A former soldier who served in the Virginia National Guard from 2009 to 2015, Jalloh was a combat engineer with no deployments and an honourable discharge, according to military officials cited by NBC.

After his discharge, Jalloh travelled to his native cou...